Sofa



FIG. 1 is a perspective view of a sofa showing my new design from thefront and left end;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right end elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a rear elevational view thereof.

The bottom is plain and unornamented.

The ornamental design for a sofa, as shown and described.